JPS5721144A - Control system for connection constitution - Google Patents

Control system for connection constitution

Info

Publication number
JPS5721144A
JPS5721144A JP9665580A JP9665580A JPS5721144A JP S5721144 A JPS5721144 A JP S5721144A JP 9665580 A JP9665580 A JP 9665580A JP 9665580 A JP9665580 A JP 9665580A JP S5721144 A JPS5721144 A JP S5721144A
Authority
JP
Japan
Prior art keywords
line
communication controller
outputs
cpu
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9665580A
Other languages
Japanese (ja)
Inventor
Mamoru Chino
Saneyuki Hiwatari
Tetsuo Nishibashi
Tomihisa Kusumoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9665580A priority Critical patent/JPS5721144A/en
Publication of JPS5721144A publication Critical patent/JPS5721144A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/50—Circuit switching systems, i.e. systems in which the path is physically permanent during the communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Maintenance And Management Of Digital Transmission (AREA)
  • Computer And Data Communications (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To decrease number of interfaces to a line terminator, by using a part of lines contained in communication controllers for the connecting control for communication controller and the line terminator. CONSTITUTION:When a communication controller ''0'' is selected, a CPU outputs ''0'' to a SD line if an AD and a WSB are all at ''1''. One of inputs of a coincidence circuit 3 is always set to ''0'', and when an FF2 outputs ''0'', the coincidence is detected and ''1'' is outputted. Since this output is inputted to a distribution circuit 8 via gate circuits 4, 5 the transmission data multiplexed from the CPU is distributed to each line via the communication controller ''0'' side. On the other hand, since the ''1'' detecting circuit 9 detects ''1'' of the AD and WSB line and outputs ''1'', the output of a multiplexer 13 passes through a gate circuit 14. Thus, the reception data from each line is transmitted to the CPU via the communication controller ''0'' side. In case of using the communication controller ''1'', the process is made similarly.
JP9665580A 1980-07-15 1980-07-15 Control system for connection constitution Pending JPS5721144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9665580A JPS5721144A (en) 1980-07-15 1980-07-15 Control system for connection constitution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9665580A JPS5721144A (en) 1980-07-15 1980-07-15 Control system for connection constitution

Publications (1)

Publication Number Publication Date
JPS5721144A true JPS5721144A (en) 1982-02-03

Family

ID=14170841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9665580A Pending JPS5721144A (en) 1980-07-15 1980-07-15 Control system for connection constitution

Country Status (1)

Country Link
JP (1) JPS5721144A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62133360A (en) * 1985-12-02 1987-06-16 ソニー・テクトロニクス株式会社 Data distribution measuring device
JPH02115774A (en) * 1988-09-19 1990-04-27 Tektronix Inc Method of measuring jitter-timing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62133360A (en) * 1985-12-02 1987-06-16 ソニー・テクトロニクス株式会社 Data distribution measuring device
JPH02115774A (en) * 1988-09-19 1990-04-27 Tektronix Inc Method of measuring jitter-timing

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